ProMag Industries Magazine, 40 S&W, 25 Rounds, Fits S&W M&P-40, Steel, Blued Finish SMI-A13 SMIA13

A double-stack 25-rd magazine for the Smith & Wesson M&P series of pistols in caliber .40S&W. Constructed from heat-treated blued-steel with a follower lock-plate and base-plate molded from a proprietary DuPont Zytel based black polymer; and using a spring wound from Chrome-silicon wire and heat-treated for strength and reliability. Made in the U.S.A.